Mounting device



Aug- 18, 1953 R. A. GOSSELIN 2,649,271

MOUNTING DEVICE Filed July 8, 1950 NvENTOR: f RAYMOND A. GossEuN, BY@ffm AGENT.

Patented Aug. 18, 1953 MOUNTING DEVICE Raymond A. Gosselin, Cambridge,Mass., assignor to United-Carr Fastener Corporation, Cambridge, Mass., acorporation of Massachusetts Application July 8, 1950, Serial o. 172,768

1 Claim.

This invention relates generally to mounting devices and has particularreference to a shock absorbing mounting device for electronic equipmentand the like. l

The object of the invention is to provide a mounting device forelectronic equipment which is adapted to absorb shocks and vibration toprevent them from being transmitted from a base to the mountedequipment.

A further object of the invention is to provide a mounting device asabove described in which the component parts are capable of beingrapidly assembled with no necessity of rubber to metal bonding.

A still further object of the invention is to provide a mounting devicein which an enlarged outer periphery of a shock absorbing diaphragm isretained in a peripheral recess in a supporting base by means of aninner retaining ring which also provides gripping engagement of anannular portion of the diaphragm between the retaining ring and thesupporting base.

Another object of the invention is to provide .a mounting device inwhich a shock absorbing rubber diaphragm has a central upstandingtubular portion with a load-bearing shaft assembled therein.

Other objects of 'the invention will, in part, be obvious, and will, inpart, appear hereinafter.

In the drawing:

Fig. l is a top plan View of a mounting device embodying the features ofthe invention;

Fig. 2 is a view in elevation of the mounting device of Fig. 1;

Fig. 3 is a bottom plan view of the mounting device of Fig. l; and

Fig. 4 is a view in section taken on line 4 4 of Fig. 1.

Referring to the drawing, there is illustrated a mounting device iii,which is adapted for assembly onto a panel I2 to receive and support apiece of electronic equipment or the like. The mounting device lll is soconstructed as to absorb shocks and vibration, so as to prevent themfrom being transmitted from the panel to the mounted electronicequipment, and allows the mounted equipment a certain amount of verticaland lateral movement relative to the panel I2.

The mounting device Ill comprises generally a supporting base I4, aresilient rubber diaphragm I6 assembled on the base, and a load-bearingshaft I8 mounted centrally on the diaphragm. The supporting basecomprises a cylindrical wall 20 having an internal peripheral recess 22disposed at the upper portion, and an inwardly extendingdiaphragm-retaining ilange 24 disposed above the recess which defines acentral opening 26. The rubber diaphragm I6 comprises generally anenlarged outer rim portion 28 and a medial portion 30 which, in theillustrated embodiment has a horizontal annular portion '32, a central.cup-shaped-portion 34, anda tubular member 36 which extends upwardlyfrom the center of the cup-shaped portion 34 and is integral therewith.

The rubber diaphragm lli is retained in assembly with the supportingbase by a cylindrical retaining ring 3S, which has the upper end turnedinwardly and back on itself forming an annular bearing surface 4t. Thering 38 is retained within the cylindrical wall by peripheral frictionalengagement therewith, and is disposed therein so that the bearingsurface 4S presses against the annular portion 32 of the diaphragm, yandforces it against the diaphragm-retaining flange 24, so that the annularportion 32 is firmly gripped therebetween. The upper end of theretaining ring Ialso partially restricts the opening to the recess 22,so that the enlarged rim portion 28 oi the diaphragm is retainedtherein.

To provide means for supporting a mounted device, the load-supportingshaft i8 is assembled inside the tubular member 38, and has an upperflange 42 disposed thereon inside the tubular member 36 above thediaphragm, so that the tubular member is expanded outwardly over theange. A lower flange 44 is mounted on the end of the shaft I8 below thediaphragm, and a washer 46 is assembled on the tubular member betweenthe diaphragm and the upper iiange i2 to constrict the tubular memberinwardly under the upper flange. The relative spacing of the flanges andthe Washer is such that the diaphragm is gripped between the lowerflange 44 and the washer 4E, and the washer 46 is retained in positionby the upper fiange 42. Downward movement of the shaft relative to thetube B is prevented by the interaction of the upper shaft and the washer46, and upward movement of the shaft relative to the tube is preventedby the lower iiange 44 bearing against the underside of the diaphragm.

The load applied to the shaft i8 is supported by the cup-shaped portion34 of the rubber diaphragm, and shocks and vibration transmitted to thediaphragm by the panel l2 are absorbed by the cup-shaped portion withoutbeing transmitted to the shaft.

Although the illustrated embodiment has been described as having adiaphragm formed of rubber, it will be understood that by the termrubber I mean to include any material having the desired resiliency andshock absorbing qualities, such as neoprene and other rubber-likematerials.

Since all component parts of the device are mechanically assembled withno rubber to metal bonding required, the device may be produced moreeconomically than similar mounting devices of the prior art, withoutsacrificing any desirable shock absorbing qualities.

Since certain obvious modifications may be made in the device withoutdeparting from the scope of the invention, it is intended that allmatter contained herein be interpreted in an illustrative and not in alimiting sense.

I claim:

A mounting device comprising a supporting base having an openingtherein; a rubber diaphragm assembled in the opening, said rubber di-saphragm having an integral upstanding rubber tubular member disposedcentrally thereon; a rigid load-bearing shaft assembled inside thetubular portion having a flange member disposed thereon above thediaphragm inside the tubularI member wherebyithe surrounding portion ofthe tubular member is expanded; a constricting washer assembled aroundthe tubular member between the diaphragm and the flange member, theinternal diameter of said washer being less than the diameter of saidflange, whereby the tubular member is constricted under the ange member;and a retaining washer disposed on the shaft below the diaphragm,whereby the medial portion of the diaphragm is gripped between theconstricting washer and the retaining flange, and the constrictingwasher is retained in position against the diaphragm by the flangemember disposed on the shaft.

RAYMOND A. GOSSELIN.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,329,121 Hachman Jan. 27, 1929 1,517,553 Fraser Dec. 2,1924.- 2,347,629 Hale Apr. 25, 1944 2,425,654 Storch Aug. 12, 19472,538,955 Efromson Jan. 23, 1951 2,592,130 Erb et al. Apr. 5, 1952FOREIGN PATENTS Number Country Date 369,154 Italy Mar. 13, 1939

